Communication control apparatus, communication apparatus, communication control method, communication method, and program

2:

• The communication control apparatus according to claim 1,
• wherein the information obtained through the reception includes information that changes in accordance with a propagation path.

3:

• The communication control apparatus according to claim 2,
• wherein the information that changes in accordance with the propagation path includes information indicating a propagation attenuation amount.

4:

• The communication control apparatus according to claim 3,
• wherein, in communication of a first frame generated by the processing unit and a second frame received as a response to the first frame, the control unit estimates the propagation attenuation amount on the basis of power involved in the communication of the first frame or the second frame.

7:

• The communication control apparatus according to claim 4,
• wherein the communication unit receives the second frame transmitted with pre-decided transmission power of the second frame, and
• the control unit estimates the propagation attenuation amount on the basis of the pre-decided transmission power of the second frame and reception power of the second frame.

8:

• The communication control apparatus according to claim 4,
• wherein the second frame includes first power information indicating reception power of the first frame, and
• the control unit estimates the propagation attenuation amount on the basis of transmission power of the first frame and the reception power indicated by the first power information.

9:

• The communication control apparatus according to claim 4,
• wherein the first frame includes a frame indicating a request for a reference signal, and
• the second frame received as the response to the first frame includes a frame including the reference signal.

10:

• The communication control apparatus according to claim 1,
• wherein the control unit decides the transmission power for the multiplex communication for each frequency.

11:

• The communication control apparatus according to claim 1,
• wherein the control unit decides the transmission power for the multiplex communication on the basis of information indicating a modulation scheme and a coding scheme used for the multiplex communication.

12:

• The communication control apparatus according to claim 1,
• wherein the communication unit receives a frame including transmission power range information indicating a range of transmission power settable in the other communication apparatus, from the other communication apparatus, and
• the control unit decides transmission power which falls within the range indicated by the transmission power range information as the transmission power for the multiplex communication.

13:

• The communication control apparatus according to claim 1,
• wherein the frame including the transmission power information includes information indicating a permission transmission period in which a frame is permitted to be transmitted as a response to the frame including the transmission power information.

14:

• The communication control apparatus according to claim 1,
• wherein a multiplex scheme of the multiplex communication includes a space division multiplex scheme or a frequency division multiplex scheme.

16:

• The communication apparatus according to claim 15, further comprising:
• a processing unit configured to generate a second frame including first power information indicating reception power of a first frame or second power information indicating transmission power of the second frame as a response to the first frame received from a transmission source of the transmission power information,
• wherein the communication unit receives the first frame and transmits the second frame.

19-20. (canceled)